/*
 * This file Copyright (c) 2015. Walle.
 * (http://www.wallellen.com). All rights reserved.
 *
 *
 * This file is dual-licensed under both the
 * Walle Agreement (WA) and the GNU General Public License.
 * You may elect to use one or the other of these licenses.
 *
 * This file is distributed in the hope that it will be
 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
 * Redistribution, except as permitted by whichever of the GPL
 * or WA you select, is prohibited.
 *
 * 1. For the GPL license (GPL), you can redistribute and/or
 * modify this file under the terms of the GNU General
 * Public License, Version 3, as published by the Free Software
 * Foundation.  You should have received a copy of the GNU
 * General Public License, Version 3 along with this program;
 * if not, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * 2. For the Walle Agreement (WA), this file
 * and the accompanying materials are made available under the
 * terms of the WA which accompanies this distribution, and
 * is available at http://www.wallellen.com/agreement.html
 *
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 */

package com.wallellen.core.io;

import java.io.File;
import java.io.FileFilter;
import java.util.List;
import java.util.stream.Stream;

/**
 * Created by <a href="mailto:wallellen@hotmail.com">WALLE</a> on 12/21/15.
 */
public class Files {
    public static void list(String path, List<File> files, FileFilter filter) {
        File file = new File(path);

        if (file.isFile()) {
            files.add(file);
        } else {
            list(file, files, filter);
        }
    }

    public static void list(File parent, List<File> files, FileFilter filter) {
        if (parent.isFile()) {
            files.add(parent);
        } else {
            File[] children = parent.listFiles(filter);

            Stream.of(children).forEach(
                    child -> list(child, files, filter)
            );
        }
    }
}
